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#273086 - 2018-02-13 09:49 HD621 What is the maximum resolution supported?
Registered: 2009-12-04
Posts: 66
Serge Offline
Mostly harmless
Serge Offline
Mostly harmless

Registered: 2009-12-04
Posts: 66
Loc: France
Hi,

The HD621 is equipped with 1.3 HDMI chipsets.
This version of HDMI supports 10.2 Gbps bandwidth.
There is no change in the bandwidth limitation with 1.4 version.

Ultra-HD blu-ray are 24 images/s and use a 4:2:0 10bits color subsampling.
With 10.2 Gbps bandwidth, the 1.3 version can handle 4k@30p 4:2:0.

Has someone done some tests with a UHD player and the HD621 to check its compatibility?

Serge.


G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
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#273087 - 2018-02-13 09:56 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2004-04-23
Posts: 2,481
Cliff. Offline
Senior Shouting Officer
Cliff. Offline
Senior Shouting Officer

Registered: 2004-04-23
Posts: 2,481
Loc: South Wiltshire, UK
It doesn’t support HDCP 2.2, hence the 722.


Main system - Sources (Kodi-HTPC, Vero 4k, FireTV, Sat) into Trinnov Altitude 32 (8-16) (+Roon), Trinnov Amplitude 8 amp & Vivid Audio (Giya G3, V1.5) and REL Stentor III speakers. Others: F80 + Raspberry Pi and other Pi systems.
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#273089 - 2018-02-13 10:21 Re: HD621 What is the maximum resolution supported? [Re: Cliff.]
Registered: 2002-02-04
Posts: 154
Sapiens Offline
Hitchhiker
Sapiens Offline
Hitchhiker

Registered: 2002-02-04
Posts: 154
Loc: nr. Paris, France
Looks like HD Fury might be the key.


G65, 598DP, HD621, DSP5200SE Front LR&C, cable TV
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#273091 - 2018-02-13 10:44 Re: HD621 What is the maximum resolution supported? [Re: Cliff.]
Registered: 2009-12-04
Posts: 66
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Serge Offline
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Registered: 2009-12-04
Posts: 66
Loc: France
Thanks Cliff.
I forgot this @*ù$ protection frown

In this case, a UHD player should downscale the signal to 1080p.

I have read a exemple with a Sony X800 player linked to VPL-HW55 projector through a Marantz 8801.
The signal is downscaled to 1080p 4:4:4 12 bits. And the result seems to be better than a BR disk.

Does the HD621 support this format ?

Serge.


G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
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#273092 - 2018-02-13 11:18 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2004-04-23
Posts: 2,481
Cliff. Offline
Senior Shouting Officer
Cliff. Offline
Senior Shouting Officer

Registered: 2004-04-23
Posts: 2,481
Loc: South Wiltshire, UK
Hi Serge

I’m no expert, but I think you would need more bandwidth than the HD621 could handle for that colour space.


Main system - Sources (Kodi-HTPC, Vero 4k, FireTV, Sat) into Trinnov Altitude 32 (8-16) (+Roon), Trinnov Amplitude 8 amp & Vivid Audio (Giya G3, V1.5) and REL Stentor III speakers. Others: F80 + Raspberry Pi and other Pi systems.
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#273101 - 2018-02-13 12:43 Re: HD621 What is the maximum resolution supported? [Re: Cliff.]
Registered: 2009-12-04
Posts: 66
Serge Offline
Mostly harmless
Serge Offline
Mostly harmless

Registered: 2009-12-04
Posts: 66
Loc: France
You're rights, Cliff. 4:4:4 is too much for HDMI 1.3
4:2:2 10 or 12 bits is ok.


G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
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#273102 - 2018-02-13 12:49 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2009-12-04
Posts: 66
Serge Offline
Mostly harmless
Serge Offline
Mostly harmless

Registered: 2009-12-04
Posts: 66
Loc: France
To give an idea of the percieved gain in resolution when changing the subsampling for the same resolution :



G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
Edited by Serge; 2018-02-13 12:49.
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#273104 - 2018-02-13 13:31 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2009-12-04
Posts: 66
Serge Offline
Mostly harmless
Serge Offline
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Registered: 2009-12-04
Posts: 66
Loc: France
I have checked the outputs of the Panasonic UB700 UHD player.
There are 2 HDMI outputs. One that can be dedicated to the audio and the other for the video only.


G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
Top
#273111 - 2018-02-13 15:12 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2009-12-04
Posts: 66
Serge Offline
Mostly harmless
Serge Offline
Mostly harmless

Registered: 2009-12-04
Posts: 66
Loc: France
Originally Posted By Serge
You're right, Cliff. 4:4:4 is too much for HDMI 1.3
4:2:2 10 or 12 bits is ok.
I say just about anything...

4:4:4 subsampling it too much for HDMI 1.3 ... for 4k resolution. Not for 1080p wink
HDMI 1.3 is compatible with 4k@30p 4:2:0 but new HDCP version does not make this possible with 1080p projectors.

So 1080p@24 4:4:4 10/12bits is ok for the HD621 cool


G68ADV + HD621
2xBSS 366
LCR Yamaha DSR112
Surround Presonus Eris E8
1 JBL 4645C sub and 1 DIY sub with WGTI15 woofer (Crest Audio 8001 amplifier)
3D-Lab Dvd Master and Panasonic BDT700
Sony HW55
Top
#273150 - 2018-02-14 08:47 Re: HD621 What is the maximum resolution supported? [Re: Serge]
Registered: 2006-06-23
Posts: 1,688
Mark_H Offline
Knows where his towel is
Mark_H Offline
Knows where his towel is

Registered: 2006-06-23
Posts: 1,688
Loc: South West, UK
I regularly passed 4K/(24|25) from an Amazon Fire TV through my HD621 using an HD Fury Integral.

Haven't tested HDR metadata through it as I didn't have an HDR capable display at the time.

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#273151 - 2018-02-14 09:32 Re: HD621 What is the maximum resolution supported? [Re: Mark_H]
Registered: 2002-02-04
Posts: 154
Sapiens Offline
Hitchhiker
Sapiens Offline
Hitchhiker

Registered: 2002-02-04
Posts: 154
Loc: nr. Paris, France
This is really good to know.

Do you know for Apple TV and 4K Box TV (equivalent Sky 4K Box) what resolution we require to have 4K on a TV?

To be honest if the HD Fury resolves the 4K issue of the HD621 that would avoid me having to buy a UHD722.


G65, 598DP, HD621, DSP5200SE Front LR&C, cable TV
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